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True or False Quiz
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Please answer all questions.

1
A damaged phrenic nerve would heal more slowly than a severed spinal nerve.
A)True
B)False
2
Oligodendrocytes can be found within the brain.
A)True
B)False
3
Nodes of Ranvier are only found on motor axons.
A)True
B)False
4
There is a higher concentration of K+ outside of a resting neuron than Na+.
A)True
B)False
5
A neuron will not respond to any stimulus during its absolute refractory period.
A)True
B)False
6
The axon nerve impulse is self-propagating and occurs in the direction towards the cell body.
A)True
B)False
7
A synapse is a junction between two dendrites.
A)True
B)False
8
Norepinephrine, epinephrine, dopamine and serotonin are classed as monoamine neurotransmitters.
A)True
B)False
9
Food additives, such as MSG (monosodium glutamate) derived from glutamic acid, could act as neurotransmitters.
A)True
B)False
10
Neurotransmitters are usually released into the synaptic vesicles during depolarization.
A)True
B)False
11
Subthreshold stimuli can never evoke an action potential.
A)True
B)False
12
Convergence is a way of amplifying a stimulus through a neuronal pool.
A)True
B)False
13
An effector is usually a muscle or motor nerve.
A)True
B)False
14
Motor neurons usually have one axon and several dendrites.
A)True
B)False
15
Nervous tissue includes areas of connective tissue.
A)True
B)False
16
Somatic afferent fibers would carry sensory impulses away from the brain, towards areas such as the eye.
A)True
B)False
17
Most brain tumors arise from neuroglial cell overgrowth.
A)True
B)False
18
A damaged CNS nerve could not regenerate as easily as a PNS fiber.
A)True
B)False
19
Gray matter most significantly contains cell bodies and dendrites.
A)True
B)False
20
The ion that always moves in a membrane direction opposite to sodium is K+.
A)True
B)False
21
Drugs that hyperpolarize an axon would make the nerve less sensitive to stimulations.
A)True
B)False
22
Calcium channels open during synaptic transmission.
A)True
B)False
23
Having myelin increases the velocity of conduction.
A)True
B)False
24
The action potential is around -70 mv.
A)True
B)False
25
The all-or-none response means that a subthreshold stimulus can never stimulate a nerve.
A)True
B)False
26
Sodium moves out of an axon as it is depolarizing.
A)True
B)False
27
Local potential changes are graded.
A)True
B)False
28
Vesicles are intracellular accumulation of neurotransmitter.
A)True
B)False
29
Motor neurons receive impulses from the muscles in order to regulate glandular secretions.
A)True
B)False
30
The nucleus of a neuron is always located within the cell body region.
A)True
B)False
31
All neurons have at least one dendrite but one or more axons.
A)True
B)False
32
Motor neurons usually have a more complex structure than sensory neurons.
A)True
B)False
33
Only axons are capable of conducting action potentials.
A)True
B)False
34
The oligodendrocytes are capable of producing the myelin sheath that will wrap around a spinal nerve.
A)True
B)False
35
The nodes of Ranvier function in slowing the conduction of the impulse.
A)True
B)False
36
The enzyme acetylcholinesterase acts to keep the signal duration short between certain neurons or between neurons and skeletal muscle fibers.
A)True
B)False







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